Motor drive for small machinery



Jan. 16, 1945.

w. w. DAWSON MOTOR DRIVE FOR SMALL MACHINERY Filed Feb. 19, 1941 2 SheetS-Sheeb l Jan. 16, 1945. w, w, DAWSON 2,367,267

* MOTOR DRIVE FOR SMALL MACHINERY Filed Feb. 19, 1941 I 2 Sheets-Sheet-2 Patented Jan. 16, 1945 UNITED STATES PATENT OFF-ICE ApplicationFebruary 19, 1941, Serial No. 379,726 3 Claims. (01. ir-242.15)

invention relates to adeviceof simple construction for supporting smalldomestic farm machinery and for supporting a motor and so onstructed asw-pmv' e e ns wh e t e.

" moto'r may be'readllyI-jattached tofor'detached,

' rroin apiece of machinery to be driven thereby,

More'particularly', it is an aim or the invention tof-provide a devicefror-use 'inconv'erting small domestic jfarm machinery such as grinding'stonea-zmeat grinders, churns and the-like from hand; operated machinesto'motor driven machines, andmore particularly to machines adapted to bedriven by small electric-motors.

Still another aim of the invention is to provide a device on-which amachine to; be driven can be readily-mounted or detached, havingmeansfor s'wingably mounting a motor therebeneath and which is adapted to bebelted to the machine to be driven so that the weight of the motor willmaintain a -proper tension on the belt and, through the belt connection,will hold the machine to bedriven securely on the device.

Still a further aim of the invention .is to provide a device oithecabove described character having a free floating countershaftmounted between the motor and the machine to be driven and arranged toswing toward and away from said machine and motor, and which is providedwith belt pulleys of different diameters to be connected by belts topulleys of the machine and motor to provide means for reducing thedriving speed so that the machine to be driven can be Figure 2 is a sideelevational view of the same,

Figure 3 is a front elevational view of the device shown arranged fordriving a low speed machine such as a meat grinder,

Figure 4 is a horizontal sectional view taken substantially along theplane of the line 4-6 of Figure 3,

Figures 5 and 6 are vertical sectional views taken substantially alongthe planes of the lines 5-5 and 66, respectively, of Figure 3, and

Figures '7 and 8 are transverse sectional views taken substantiallyalong the planes of the lines i---! and 8--8, respectively, of Figure 5.

Referring more particularly to the drawings,

wherein like reference characters designate like or'corresponding partsthroughout the diiferent views, Ill designates generally an uprightsupport includinga top II which is in the form of an open rectangularframe formed of corresponding angle members I! which arefastened'together at their ends by means of fastenings I3. The frame {Iilag-provided with depending legs I4, likewise formed of angle membersand which are connected to the ends ofthe angle members l2 by thefastenings l3 and which extend downwardly therefrom in divergingrelationship to one another.- {The support I0 is provided wtihdiagonally disposed braces IS, the corresponding ends of which; arefastened to themembers i2, intermediate of their ends, and the opposite,corresponding ends of which are fastened to the legs l4, intermediate oftheir ends. The braces l5, as best seenin Figure 6, are formed ofelongated flat bars.

The members [2 of the support I0 are each provided with an upperhorizontally disposed side. An angle member i6 is disposed on thehorizontal side of the angle member l2, which is to the front of thesupport l0, and which is provided with an upstanding forwardly disposed'side' it. The horizontally disposed sides of the members I2, which aredisposed at the sides of the support It, are provided with longitudinalslots It, as seen in dotted lines in Figure 2. A' bar I!) is' disposedcrosswise of the support l0 and is'provided with a side 20 which restson the horizontal sides of the side members l2. Nut and bolt fastenings2i extend through the side 20 and through the slots ill for connectingthe member l9 thereto. It will be obvious, that when the fastenings 29are loosened the member i9 may be moved toward and away from the memberi6 and the fastenings 2! can be tightened for securing the member [9 inadjusted positions. The member it, as best seen in Figure 2, is providedwith an upwardly extending side 22 which is inclined toward the front ofthe support l0.

A U-shaped bearing support 23, which is preferably formed of angle iron,is pivotally connected adjacent the extremity of its legs 24 by means ofthe fastenings 25 to two of the braces I5, which two braces are disposedadjacent one side 'of the support ill and at the front and rear thereofto thereby swingably mount the bearing support 23 on the support l0 andso that it can swing toward and away from the top of the support ill.The fastenings 25, as best seen in Figure 6, each preferably includes anut and bolt. On the shanks of these bolts are mounted bushings 26 whichare journaled thereon and on which are journaled the legs 24 of thebearing support 23. A bearing 21 is mounted on and securely fastened to"each of the legs 24, remote to their free ends. The bearings 21 aredisposed in alinement for receiving a countershaft 28 which is journaledtherein and which has one end projecting forwardly from the support I0.Said end of the countershai't 25 is provided with a small belt pulley 29and a substantially larger belt pulley 30 which is disposed on the outerside of the pulley 29, said pulleys being suitably keyed to thecountershaft 28.

A bar 3| of angle iron is secured by fastenings 32 to a front and rearleg I4 and is disposed adjacent the lower ends of said legs l4 and atthe side of the support l0, opposite to the side on which the bearingsupport 23 is pivotally mounted. A bearing 33 is provided with anextension 34 which is pivotally connected at 35 to the forward leg H ofthe two legs to which the bar 3| is connected, and which rests on and issupported by the horizontal side or flange of the bar 3|, as best seenin Figure 8. A bearing 36 is secured to the horizontal side of the bar3| by a fastening 31 and is disposed in spaced apart relationship to thebearing 33. A shaft 38 is journaled adjacent its ends in the bearings 33and 36. As best seen in Figure 8, bearing 33 is provided with an opening39 for receiving one end of the shaft 38 and the bearing 36, as bestseenin Figure '1, is provided with an upwardly opening notch or recess 49for receiving the other end of the shaft 38 so that said shaft can bereadily applied to or removed from said bearings. As best seen in Figure5, a flange 4| is suitably secured to or formed integral with theintermediate portion of the shaft 36 and projects transversely therefromand inwardly of the support l9 and is provided adjacent its ends withnut and bolt fastenings 42. A conventional motor 43, as for example asmall electric motor, is provided with supporting legs 44 havingapertured feet 45. The feet of one pair of the legs 44, which aredisposed at one side of the motor 43, are connected by means of theirapertures engaging the fastenings 42, to the flange 4|, as best seen inFigure 5, so that the motor 43 is mounted to swing vertically at a levelbelow that of the countershaft 28. The motor 43 is provided with adriven shaft 46 having a stepped or cone pulley 41 which is of adiameter substantially less than that of the pulley 30.

A hook 48 .isprovided with an eyelet 49 in its shank end which isadapted to loosely engage an opening, not shown, in the depending sideof the angle member 2 which is disposed at the side of the support ID onwhich the motor 43 is pivotally mounted. As best seen in Figure 3, thebearing support 23 can be swung upwardly to its dotted line position andbe engaged by the hook 48 in said position for supporting the bearingsupport 23 in substantially a horizontal position, for a purpose whichwill hereinafter become apparent.

Referring to Figures 1 and 2, a pair of grinding stones 50 are keyed toa shaft which is journaled in a bearing 52 which forms the upper end ofa post or standard 53. These parts are of conventional construction andform no part of the invention but are illustrated and described toillustrate one application thereof. A base member 54 is fastened to theunder side of the base of the post or standard 53 and is disposed on topof the support H) with one end thereof bearing against the rear face ofthe upstanding side l1 and its opposite end engaging against theforward, inner side of the inclined side of flange 22. Said opposite end55, as best seen in Figure 2, is inclined to correspond to theinclination of the side 22. It will thus be seen that the grindingstones 50 are mounted'by the base 54 on the support In in a way so thatthey can be readily removed by an upward movement of the forward end ofthe base 54 and in a manner which prevents their removal otherwisetherefrom. The grinding stones 50 are intended to illustrate one type ofhigh speed machinery which is adapted to be driven by the motor 43 andwith high speed machinery a small belt pulley 56 is keyed to the forwardend of the shaft 5| and is connected directly to the belt pulley 41 by abelt 51 to be driven thereby. When grinding stones or other high speedmachines are operated by the motor 43 the bearing support 23 is disposedin a depending position, as illustrated in Figure 1, at one side of thesupport l0 and in its inoperative position. It will be obvious that theweight of the motor 43 will hold the belt 51 tensioned and will alsocooperate with the parts l1 and 22 to produce a downward pull on thegrinding stones to hold the base 54 securely in position on the support[8. To remove the grinding stones from the support III, the motor 43 isswung upwardly to release the belt 51 so that it can be detached fromthe pulley 56 after which the base 54 is swung upwardly and rearwardlyof the support l0 and thereby readily detached therefrom.

In Figures 3 and 4 the invention in shown with the parts arranged todrive a low speed machine, as for example a meat grinder 58 which isprovided with a clamp 59 which is secured to a cross member 60 of a base6| which is provided with depending sides 62 the lower ends of which areclamped between the flange l1 and the flange 22 in the same manner asthe base 54. A large belt pulley 63 is keyed to the shaft 64 of the meatgrinder 58. A belt 65 is disposed over the small belt pulley 29 afterwhich with the support 23, in the position as seen in Figure 1, a belt66 is trained over the pulleys 39 and 41. The support 23 is then swungupwardly to its dotted line position of Figure 3, engaged and held bythe hook 48 while the belt 55 is trained over the pulley 63, after whichthe hook 48 is disengaged to permit the support 23 to assume its fullline position of Figure 3. In this position, the weight of the bearingsupport 23 will hold the belt 65 tensioned and the weight of the motor43 will hold the belt 66 tensioned. It will be obvious that the shaft 64will be driven at a reduced speed to the shaft 46 due to the fact thatthe pulley 30 is larger than the pulley 41 and the pulley 63 is likewiselarger than the pulley 29. It will also be apparent that the weight ofthe motor and bearing support will hold the meat grinder 58 securely inposition on the support I.

Various modifications and changes in the invention are contemplated andmay obviously be resorted to as only a preferred embodiment thereof hasbeen disclosed.

I claim as my invention:

1. In combination, a support, apparatus removably disposed thereonhaving an operating pulley, abutment means for the support rising fromsaid apparatus disposed at an angle to the direction of removal of theapparatus, a drive motor pivoted to the support below the apparatusincluding the pulley, a drive belt means traversing said pulleys, saidsecond pulley being suspended in the-bight of the belt means for thedual abutment means for the support rising from said apparatus disposedat an angle to the direction of removal of the apparatus, a drive motorpivoted to the support below the apparatus including a pulley, a leverpivoted to the support at an elevation between said apparatus and saidmotor, a countershaft journaled on said lever, relatively larger andsmaller pulleys on said countershaft, a belt traversing the smallerpulley and adapted to suspend the latter from said operating pulley, anda belt traversing the motor pulley and said larger pulley and suspendingthe motor and its pulley therefrom.

3. A device of the class described comprising a support, means forsupporting and detachably mounting apparatus to be driven on thesupport, a motor pivoted on said support below said apparatus, a pulleyon and driven by the motor, a lever pivoted to said support at anelevation between said first and second pulleys, a countershaftjournaled on. said lever having thereon relatively larger and smallerpulleys. said lever when unrestrained by a belt, being movable under theweight of the larger and smaller pulleys out of the zone of operation ofa belt traversing the first pulley and second pulley, said supporthaving abutment means rising thereon, said apparatus being adapted tocontact and be removably posi- I WILLIAM W. DAWSON.

